Garmin G3X - Page 408

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 24-8
Figure 24-1.6 GMU 22/GSU 25/GTP 59/GI 260 Interconnect Drawing
3
1
2
RS-485 RX 1 A
RS-485 RX 1 B
GMU 22 POWER OUT
RS-232 TX 2
GMU 22 POWER GROUND
12
13
6
15
7
GTP 59
POWER
LOW
MAGNETOMETER
GMU22
P441
4
2
9
8
6
RS-485 OUT A
RS-485 OUT B
+12VDC POWER
RS-232 IN
POWER GROUND
3
1
GSU 25
P252
SENSE
SIGNAL GROUND (RS 232)
SIGNAL GROUND (RS 485)
TEMP PROBE IN LO
TEMP PROBE POWER OUT
TEMP PROBE IN HI
P251
S
AIRCRAFT GROUND
AIRCRAFT POWER 1
# 22
# 22
9
7
2
GSU 25
CAN-L
CAN-H
GROUND
2
1
6
PITOT
AOA
GAP26 AIR DATA PROBE
PNEUMATIC
STATIC
CONNECTIONS
5
4
UNIT ID
UNIT ID GROUND
NOTE: ONLY INSTALL THIS JUMPER FOR ADAHRS #2
NOTE: GMU22/GTP59 OPTIONAL FOR ADAHRS #2, #3
RS-232 TX 1
RS-232 RX 1
5
4
NOTE: THIS RS-232 USED FOR OPTIONAL BACKUP BUS TO DISPLAY FOR ADAHRS #1, #2
GROUND 11
RS-232 TX 3
RS-232 RX 3
9
10
S
14/28 VDC
CONFIGURATION GUIDANCE
1. G3X
A. ON THE GDU 46X/37X CONFIG MODE LRU EQUIPMENT CONFIGURATION PAGE
ENABLE ADAHRS 1,2, OR 3 AS APPROPRIATE FOR THIS UNIT
ENABLE MAGNETOMETER FOR THIS UNIT IF CONNECTED
ENABLE OAT PROBE FOR THIS UNIT IF CONNECTED
ENABLE AOA FOR THIS UNIT IF CONNECTED TO GAP 26 PROBE
B. IF USING THE GSU 25 RS-232 1 PORT AS A BACKUP BUS, ON THE GDU 46X/37X CONFIG MODE
RS-232 CONFIGURATION PAGE
SELECT "GARMIN INSTRUMENT DATA" FOR THE RS-232 PORT CONNECTED
TO THE GSU 25
AIRCRAFT POWER 2
# 22
8
FOR ADAHRS #3, INSTALL JUMPER BETWEEN PINS 4,5
AND ADAHRS #3
REFER TO GSU 25 TO TRANSPONDER CONNECTION DRAWING EXAMPLES
WHT
BLU
ORN
WHT
BLU
ORN
GI 260 AOA INDICATOR
CAN-L
CAN-H BLUE
VIOLET
# 22
2
GI 260
14/28 VDC
# 22
WIRE PIGTAIL
POWER GROUND
AIRCRAFT POWER RED
BLACK
SHIELD GROUND
DC LIGHTING BUS GRAY
AUDIO MONO OUT WHITE
AUDIO MONO GROUND GREEN
NOT REQUIRED FOR G3X/G3X TOUCH SYSTEMS
14/28 VDC AIRCRAFT LIGHTING BUS REFERENCE VOLTAGE
(OR LEAVE DISCONNECTED AND USE PHOTOCELL)
SHIELD GROUND
HEAT
SHRINK
HEAT
SHRINK
NOTE: IN AN INSTALLATION WITH MORE THAN 1 GSU 25, THE AOA TUBING SHOULD
AT LEAST BE CONNECTED TO GSU 25 #1 (#2, #3 ARE OPTIONAL)
S